Acoustic barrier



FIG. 1 is a front perspective view of an acoustic barrier of a firstembodiment;

FIG. 2 is a front view of the first embodiment;

FIG. 3 is a rear view of the first embodiment, showing the acousticbarrier with a backing sheet;

FIG. 4 is a top view of the first embodiment;

FIG. 5 is a bottom view of the first embodiment;

FIG. 6 is a left view of the first embodiment;

FIG. 7 is a right view of the first embodiment;

FIG. 8 is a rear perspective view of the first embodiment;

FIG. 9 is a front perspective view of an acoustic barrier without abacking sheet of a second embodiment;

FIG. 10 is a front view of the second embodiment;

FIG. 11 is a rear view of the second embodiment, showing the acousticbarrier without a backing sheet;

FIG. 12 is a top view of the second embodiment;

FIG. 13 is a bottom view of the second embodiment;

FIG. 14 is a left view of the second embodiment;

FIG. 15 is a right view of the second embodiment; and,

FIG. 16 is a rear perspective view of the second embodiment.

The acoustic barrier is shown with a symbolic break in its width. Theappearance of any portion of the article between the break lines formsno part of the claimed design.

CLAIM The ornamental design for an acoustic barrier, as shown anddescribed.